The QX9920 is an integrated circuit (IC) manufactured by QX Micro Devices. It is a low power, high efficiency, and high brightness LED driver in a SOT-23-6L form factor. This IC is designed to power and control up to 8 LEDs at a maximum of 20mA each. It utilizes a constant current source architecture, and includes features such as over-temperature protection and soft-start control for greener operation. The QX9920 meets the requirements of RoHS for hazardous materials, meaning it is free of lead (Pb), mercury (Hg), and other hazardous materials.